4224121231249 has 2 divisors, whose sum is σ = 4224121231250. Its totient is φ = 4224121231248.

The previous prime is 4224121231243. The next prime is 4224121231277. The reversal of 4224121231249 is 9421321214224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4219018700625 + 5102530624 = 2054025^2 + 71432^2 .

It is a cyclic number.

It is not a de Polignac number, because 4224121231249 - 2¹⁵ = 4224121198481 is a prime.

It is not a weakly prime, because it can be changed into another prime (4224121231243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112060615624 + 2112060615625.

It is an arithmetic number, because the mean of its divisors is an integer number (2112060615625).

Almost surely, 2^{4224121231249} is an apocalyptic number.

It is an amenable number.

4224121231249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4224121231249 is an equidigital number, since it uses as much as digits as its factorization.

4224121231249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 37.

The spelling of 4224121231249 in words is "four trillion, two hundred twenty-four billion, one hundred twenty-one million, two hundred thirty-one thousand, two hundred forty-nine".